exploits, achievements, unreeling cocoons
績 centers on the results of sustained effort: achievements, exploits, or the literal thread of work spun from unreeling cocoons.
績 combines 糸 (thread) with 責, which likely contributes the sound and the idea of accumulating or piling up, suggesting the spinning of thread from cocoons and, by extension, accumulated achievements.
The left side is thread 糸, and the right side 責 suggests responsibility or accumulation. Picture unreeling silk from cocoons, thread by thread, until you have a pile of achievements.
For セキ, imagine a stack of achievements so tall it blocks the sun: a 'seki' (せき, barrier) of success. The barrier セキ cues the reading while the thread of work builds up.
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achievements; actual results; accomplishments; past results; track record
results; record; grades; marks
achievement; performance; results; work; contribution
achievement; meritorious deed; distinguished service; contribution
war or military record; score; military achievements; results
spinning (textiles)
achievement; deed; exploit; merits
spinning jenny
poor result; bad record; failure
corporate earnings; corporate performance
personal results; individual's score
glorious achievements
service record
(one's) work performance; performance record; service record
business results; business performance
good results
good business results
school record; scholastic performance
school record; achievement
to accomplish something; to leave a mark; to make an impression; to build a track record